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dziedzina:
a = 1 b = 4 c = -5
Δ=
√Δ = √36 = 6
D∈R\ { -5 ; 1)
Zadanie 2
1)
2)
Zadanie 3
Zadanie 4
Zadanie 5
x = 0 v 2x-1 = 0
2x = 1 /:2